Do you have an owners manual with the Chevy? Should be able to find that information there, if not, you might want to post on the "Dinghy Forum"... It's a forum on this site for people who are towing a vehicle behind their rv.
Worse case, could call a Chevy dealer, ask for the service dept and they should be able to answer the question for you...
Jim & Kathy, (Boxers, Buddy & Sheba)
2016 Ram 3500 DRW Longhorn 4X4/CC/LB/Aisin/4.10/rear air assist ...Pearl White.
2016 DRV MS 36RSSB3/ W&D/ slide toppers/ DTV satellite/ 5.5K Onan propane gen.
B&W RVK3600 Hitch
Fulltiming in WV & TX
USAF 71-75 Viet Nam Vet